Retraction
Hi
I know that there are simular topic about this but Ím really confused about all the millions of settings in Slic3r so if someone could guide me through the most important ones to avoid this oozing and stringing.
I recently printed a thing that should take about 4 hours and when it was about 1 hour left and it was doing this rectilinear infill over a large area it started to break so I paused it a couple of times and cleaned the nozzle but the pattern was getting worse for every layer so finally I had to stop the print 😤
So when it comes to smaller areas that infill works but when it has to go over larger areas it will start to break up.
So what I understand it is the retraction speed that causes some filament to get stuck in the nozzle and that will damage the lines in the pattern
Hereś the question, how should I fix this? Should I change the infill pattern and infill percentage? Should I change the retraction speed which is now 35 according to the settings in Printer settings—Extruder 1–Retraction speed (I cańt find retraction distance which I have read about)?
So as I mentioned in the beginning there is a jungle of settings and itś difficult for a beginner to grasp them all.
Hope someone out there can bring some clarity to this topic so I can be better.
/Krister
RE: Retraction
Hi Krister,
Can you provide some more information? From the picture I can't see retraction being the main cause.
Do other parts print ok?
Is this something that just stared after printing and not having issues?
What material are you printing with what temperature settings?
You willing to share the .SLT or 3mf file so we can make sure it's not a design issue?
RE: Retraction
Hi
Using PLA from Flashforge, don´t know anything about the brand but I haven´t had any problem before.
Temp is 215 on extruder and 60 on bed
I have printed some simular parts and there haven´t been any problem with them.
Here is the .slt
The problem start when it starts to cover the large areas on top
Seems like I can´t send .slt file
RE: Retraction
Sorry looked at the wrong box 😀
The filament is Prima Select and I have used it a lot without any problem
RE: Retraction
If you are having problems when printing large infill areas, try simply slowing down. The Prusa profiles are a bit aggressive when it comes to infill and solid infill speeds. If you're using the 0.2mm SPEED profile, it tries to print infill at 200mm/s. Start your print, then use the front knob to slow the speeds down. I'd go to 50% initially. If that fixes the problem, you can just adjust your speed settings in PrusaSlicer (under Print Settings->Speed) or use a QUALITY profile. Experiment to see what speeds you can use without infill problems.
RE: Retraction
@bobstro
I uses both Speed and Quality when I print (dońt ask why).
But the speed makes sense so I will try to slow it down and see what happens.
What infill do you recommend to make a solid part?
So you dońt think this is a retraction issue, you think thatś more that it goes to fast.
This is the model
https://www.thingiverse.com/thing:4389924
RE: Retraction
[...] I uses both Speed and Quality when I print (dońt ask why).
I started with the Quality profile, then increased speeds until I was still satisfied with print quality to print time trade-off.
[...] What infill do you recommend to make a solid part?
Gyroid is popular, but I tend to use grid because it prints quickly. Stefan of CNC Kitchen did a good infill comparison. He determined that infill has some bearing on part strength, but that simply increasing perimeter count (walls) has a far greater impact on part strength. If I want a strong (not necessarily solid) I'll use more perimeters.
So you dońt think this is a retraction issue, you think thatś more that it goes to fast.
I don't see anything in your pictures that makes me think infill is a problem.